Williams race driver Russell, returning to the wheel for Mercedes after driving its 2019 car in the official post-season test last week, completed more than 200 laps over Sunday and Monday at the Yas Marina circuit.
Sunny weather allowed Russell to complete 100 and 118 laps on the two respective days as Pirelli’s 2021 development testing came to an end for the year.
Pirelli tasked Renault, McLaren and Mercedes with its initial 18-inch wheel testing using mule cars.
Renault’s Sergey Sirotkin completed 213 laps at French Grand Prix venue Paul Ricard during Pirelli’s first test in September.
McLaren’s Carlos Sainz and Lando Norris were the race drivers to test Pirelli’s 18-inch tyres, when they tested at Paul Ricard last month, completing more than 100 laps between them.
The programme will increase to 25 test days in 2020, and comprise all 10 teams, before the definitive 2021 tyres are used in a three-day group test following the Abu Dhabi Grand Prix.